The Accountant tab is only accessible by the Primary admin or Company admin for your firm, ekta1. Since your role is Standard all access, I recommend that your administrator change it to Primary admin.
After the role is changed, your administrator can access the Accountant tab and then invite you to their firm. You will receive an invitation via email, which you can accept to set up your accountant account.
You may refer to this article for guidance on user roles in QuickBooks Online (QBO).
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